Bead-forming machine.



W. A. BRUBAKER & F. F. BRUCKER.

BEAD FORMING MACHINE. APPLICATION FILED FEB. 23. IsIs.

1 l 92,383. IIIIIIIIIIIII JIIIy 2.5, IIIIII.

3 SHEETS-SHEET l.

W. A. BRUBAKER @L F. F. BRUCKER.

BEAD FURMING MACHINE.

APPLICATION FILED FEB.23,1916. 1,192,383 Patented July 25,1916.

3 SHEETS-SHEET 2.

/Qy M95.

W. A. BRUBAKER L F. F. BRUCKER.

BEAD Pom/ms MACHINE.

APPLICATION FILED FEB. 23, 9l6. 1,1 92,383, Patented July 25, 1916.

' 3 SHEETS-'SHEET 3. I Fl 4. 17C? any suitable means,

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BEAD-FORIVIING MACHINE.

Speccation of Letters Patent.

Patented July 25, 1916.

Application filed February 23, 1916. Serial N o. 79,957.

To all wimmelt may concern.'

Be it known that we, WILLIAM A. BRU- BAKER and FERDINAND F. BRUCKER, citizens of` the United States, residing at Akron, Ohio, have invented certain new and useful Improvements in Bead-Forming Machines, of which the following is a specification.

ur present invention relates to improvements in machines for forming rolls or beads at the edges or open ends of tubular rubber articles and is shown and described in the present instancey as adapted more particularly for rolling beads on the ends of the tubular neck or stems of toy balloons, though not limited to this specific use.

he invention provide a simple, economical, eflicient and durable machine which will roll such beads in an automatic manner with great rapidity and without danger of injury composition of which the articles are made.

ur said invention includes the novel features of construction and arrangement and combination of parts hereinafter described and particularly defined by the appended claims.

In the embodiment of our invention illustrated in the accompanying drawings, Figure 1 is a plan view with the table partly broken away. Fig. 2 is a sectional elevation, with parts omitted. Figs. 3 to 5 are detail views.

The articles upon which the beads are to be rolled are mounted upon the forms or cores indicated at A, designed to be applied to an endless moving carrier and to be brought thereby successively into coperative relation to the bead rolling means. The endless moving carrier may conveniently take the form of a rotary table 1 revolving continuously during the normal operation of the machine, in the direction of the arrow indicated in Fig. 1, and steadied or supported by rollers 1x suitably mounted on the frame.

Motion may be imparted to the table by such for example, as worm wheel 2 fast on the vertical shaft 3, which supports the table. This worm wheel 2 meshes with a worm 4c fast on a horizontal shaft 5 journaled in suitable bearings 6 and 7, -",which at its outer end carries a rigidly attached worm wheel 8 which in turn meshes with a worm 9 faston drive shaft 1,0. `This drive shaftmay be driven from any suitable .'rource of power as for instance an elechas, among its objects, to

to the rubber tric motor, (not shown) by means of a belt 11a passing over belt pulley 11.

Arranged circumferentially of the table is a series of swinging arms 12, pivoted preferably to the under face of the table at 12a and swung normally outward in the po-V sition shown on the upper part of Fig. 1 by whereby the latter relative to the v The table is provided with a plurality of slightly curved slots la extending inward from its peripheral edge, which slots la receive the narrow or reduced portions 14C of the spools or supports 14. The spools have downwardly extending Shanks journaled in the arms 12 near their outer ends and fast on said Shanks below said arms are the pulleys or sprockets 15 designed to rotate said form supports at the proper time to coperate with the bead rolling mechanism hereinafter more fully described.

e form or core carrying the article to cated having been placed on the carrier the article is to be first subact upon the article before the carrying arm has been swung inwardly toward the axis of the table. The brush is preferably carried by an arm 17 pivoted to a post 17a .fixed to l of the brush arm is prevented by aset screw 17c of arm 17 bearlng against a lug 18a carried by post 17a. The function of the brush is to eect the engagement of pin 14h with the notches or recesses of the cores. The arms are swung inward toward the axis of the table to bring them into proper position to Ibe acted upon by the bead rolling` mechanism by a curved guide 20 acting on the spindle support 12 but before reaching this point it is desirable that means shall be provided to insure the proper seating of the forms on the carriers, and also that they shall be held down upon the carriersduring the action of the bead uation of said arm 23 is provided with a or otherwise secured to forming roll which in order to roll the bead has to exert an upward pressure on the rubber form or article.

The means for holding the forms down upon carriers comprises a guide plate or ring 21 secured to the upper face of the table by brackets 22 and arranged concentric with the edge of the table. Said guide plate is spaced sufficiently from the upper face of the table to permit the passage therebetween of the annular flanges formed at the bases of the forms. This guide plate 21 has re-v cessed portions 21a corresponding to the slots or recesses 1 in the table edge, to permit the forms to extend therethrough. j

The means for detecting or ascertaining whether the forms are properly seated on the arms before they are swung into said recesses, inthe embodiment shown in the drawings, comprises a lever arm-23 having an upwardly curved or inclined end 23a adapted to engage with the upper faces of the fianges of the forms. This arm 23 is freely pivoted on a stationary axis 23d and is sustained in a substantially horizontal position by an adjustable stop such as set screw An arm 23b which may form a continlug 23c adapted to form a stop for spring pressed rod 25 guided in brackets 26 and tending, under action of spring 27 to move toward the left. The opposite end of this rod is adapted to operate means for stopping the machine. Where the apparatus is driven by an electric motor such stopping means may take the form of a pin 25a adapted to normally rest behind the handle 28 of the switch, which controls the supply `of current to the driving motor.

The arms are swung inward toward the table to bring the carriers and forms into the recesses in the table guide or presser plate by a guide '20 curved concentrically with the table and having an initial inclined or convex portion which engages suitable bearing portions of the carriers and swings them inward toward the axis of the table and holds them in this position whilethey are being rotated to enable the bead forming roller to roll or form the bead.

The carriers may be provided with antifriction rollers to coact with the guide 20.

The spindles arey rotated to impart a revolving motion to the forms by means such as an endless belt or chain. 30 passing over sprockets 31 and 32, the latter of which is fast on a shaft 33 ljournaled in a suitable bearing in bracket 34. This shaft has keyed 'its lower end agear 35 which meshes with a gear 36 fast 'to a second vertical shaft 37 journaled in said bracket 34. This shaft 37 carries at its upper end a miter gear 38 which meshes with a miter (gear l39 on the drive shaft 10. Provision may be made for applying sufficient lbase of the machine, and

tension to the chain 30 by sprocket 31 from a bracket 40 slidably secured to the main frame or base of .the machine, the requisite tension being secured by set screw 40,

We find the best results are secured by having the portion of the belt or chain which acts on the driving portions of the spindles travel in the same direction as the table but at a greater speed. To prevent any slipping and to give a positive drive we preferably form the endless belt in the shape of a sprocket chain meshing with sprocket wheels 15 fast on the spindles.

The device which acts on the revolving forms to roll the beads comprises a roller 41, preferably of cone or truncated cone shape, and having a removable covering of soft rubber or analogous material indicated at 41a. This roller is supported from one end\only and inclines upwardly with relation, to the plane of the table and with its free end pointing in the direction of rota tion of the table. Said roller 41 is supported and operated by a is preferably detachably connected to said shaft by having a stem 41b fitting in a socket in the en'd of shaft 42 and secured therein by set screw 42a. Said shaft 42 is journaled in bearings carried by the arms 43nl and 43b of a forked bracket 43 through which passes rotatable shaft 44. Said bracket is therefore rotatably supported -by said bearing 45 of said shaft. A springl 46 connected respectively to bearing arm 43" and to a relatively fixed lug 47 tends to keep the roller pressed against the successive forms with a yielding pressure.

Bearing member 45 has its lower end mounted to oscillate on a horizontal drive shaft 48 journaled in the main frame or said member is provided with an extension or arm 49 which has a slot through which passes a fixed Veratically disposed threaded post 50. This holds said arm and bearing member 45 against rotation about said shaft 44, but enables the inclination of said bearing member 45 and said shaft 44 to be varied through means such as lock nuts and washers on said rod 50, and by this means the.,inclination of roller 41 to the plane of the table may be varied. Lug or projection 47 is conveniently carried by a bar 51 secured to arm 49 and said bar also carries another lug or projection 52 through which passes a set screw 52 serving as an adjustable stop to limit the backward swing of the bracket 43". Shaft 42 carries a bevel gear 521 which meshes with albevel gear 52 carried at the upper end of shaft 44. This shaft carries at its lower end a bevel gear 54 which meshes with a bevel gear 55 fast on a shaft 48 prof videdwith driving means such as belt pulley 56 adapted to be driven from belt pulley 5.7 on shaft 10 through the belt 58.

rotating shaft 42 and shaft and the i Having thus described our invention, what we claim is l. A machine of the class described come prising a conveyer, form carrying devices rotatably carriedv by said conveyer, an inclined rotary bead forming roll mounted in proximity to said conveyer to swing toward and from 'said forms, pressure means normally forcing said roll yieldingly toward the forms, means for rotating said roll, and means for rotating the forms as they travel ,'past said roll.

2. A machine of the class described comprising a conveyer, form carrying devices rotatably carried by said conveyer, an inclined rotary bead forming roll mounted in proximity to said conveyer to swing toward and from said forms, pressure means normally forcing said roll yieldingly toward the forms, means for holding the forms in place on the form carrying devices, means for rotating said roll, and means for rotating the forms as they travel past said roll.

3. A machine of the class described comprising a conveyer, form carrying devices, to be placed on said devices to interlock therewith, a rotary bead forming roll having its upwardly moving surface adapted to act on the article carried by the orm near its lower edge, said roll having its axis inclined to the plane of the conveyer, means for holding the forms in locking engagement with the carrying devices while subjected to the action of the bead orming roll, and means controlled by the position of the forms on the carrying devices'to stop the movement of the machine in case a form is not properly seated on its carrying device.

4. In a machine of the character described, a rotary table, annularly arranged form carrying devices rotatably carried by said table, a roll shaft mounted approximately tangential to the periphery of said table, and aving a free end spring pressed toward the forms carried by said table, a bead forming roll carried by the free end of said shaft, said roll `and shaft inclining upwardly with relation to the plane of the table, means for holding the forms on said form carrying devices, means for rotating the form carrying delvices, and means for rotating said forming ro l.

5. A machine of the class described comprising a conveyer, form carrying devices supported thereby, forms `adapted to be placed on said form carrying devices to have non-rotatable connection therewith, means adapted to acton said forms to eifect said non-rotatable connection, a spring pressed bead forming roll having its axis inclined to the plane of the conveyer for acting on the articles carried by the forms, and means for rotating the carrying devices while they are so acted upon.

`effect engagement 6. A machine of the class described comprising a conveyer, rotatable form carrying devices carried thereby having spindles to engage axial recesses in the forms and offset projections to engage corresponding oifset recesses in the forms, means for imparting a rotary movement to said forms on the carriers to effect engagement of the offset projections and recesses, an inclined rubbing roll for acting on the material on the forms, means for rotating said rubbing roll, and means for rotating the form carrie-rs during the action of said rubbing roll.

vmachine of the class described comprising a conveyer, rotatable form carrying devices carried thereby having spindles to engage axial recesses in the forms and offset projections to engage corresponding o'set recesses in the forms, a stationary brushv having bristles projecting into the path of movement to said forms on the carriers to of the offset projections and recesses, an inclined rubbing roll for acting on the material on the forms, means for rotating said rubbing roll, and means for rotating the form carriers during the action of said rubbing roll.

A machine of the class described comprising a conveyer, rotatable form carrying devices, means for holding the forms thereon inl interlocked engagement therewith, means for rotating the form carriers during a portion of their travel with the conveyer, a roll shaft having a free projecting end, a bead forming roll removably carried on said end and adapted to coact with the articles on the forms, means for pressing said free end toward the forms, and means for driving said shaft.

9. A machine of the class described comprising a conveyer, rotatable form carrying devices, means for holding the forms thereon in interlocked engagement therewith, means for rotating the form carriers during a portion of their travel with the conveyer, a roll shaft having a free projecting. end, a bead forming roll removably carried on said end and adapted to coact with the articles onthe for'ms, a yoke having arms i'n which said shaft is journaled, a driving shaft projecting through said yoke and having bevel gearing connecting it to said roll shaft, and a spring acting on one of the arms of said yoke.

l0. A machiney of the class described comprising a conveyer, rotatable form carrying devices, means for holding the forms thereon in interlocked engagement therewith, means for rotating ing a portion of their travel with the conveyer, a roll shaft having a free projecting end, a bead forming roll removably ycarried on said end and adapted to coact with the articles on the forms, means for sup orting said roll shaft with its axis inclinedp to the the form carriers durplane of the conveyer, driving means for saidfroll shaft, and means for varying the inclination of said shaft without disturbing the driving connections thereto.

11. A machine of the class described comprising a conveyer, rotatable form carrying devices supported thereby, means for rotating the form carriers during a portion of their travel With the conveyor, a roll shaft having a free projecting end, a bead forming roll carried thereby, a pivoted yoke havin arms provided With bearings in which said shaftis journaled, yielding means tending to rock said yoke' in one direction, a shaft projecting through said yoke and operatively connected with said roll shaft, a bearing member for Said shaft, a drive shaft about which said bearing isadapted to oscillate, said drive shaft having driving connections With said lirst named shaft, and means for adjusting the position of said bearing member.

12. In a machine of the character described, a rotary table having recessed edges,

a plurality of arms pivotally connected to the table near said recesses, form carriers carried by said arms, forms having bases adapted to interlock with said form carI riers, a stationary guide for swinging said arms toward the table to cause the orm carriers to enter the recesses as the table rotates, means carried by the table to overlap portions on the forms to hold them on the form carriers, a rotating bead forming roll adapted to contact with the articles on the forms, and means for rotating the form carriers While traveling past said Lead forming roll.

13. A machine of the class described comprising an carrying devices rotatably carried by said conveyer, a rotary bead forming roll `for engaging the articles on said forms, and an endless moving drive belt having a portion in driving relation to said spindles and moving in the same direction as the spindle conveyer and at a greater speed.

WILLIAM A. BRUBAKER. FERDINAND F. BRUCKER.

endless moving conveyer, formv 

